JP5032782B2 - Blower with cooling means - Google Patents

Description

  The present invention is an improvement of a blower for various manufacturing factories such as food factories, foundry factories, vehicle factories, etc., used when blowing fluid such as high-temperature air / gas, and is optimal cooling for these various factories. The present invention relates to a blower provided with means.

  By the way, in various types of blowers for manufacturing factories, various measures have been taken to prevent the generation of heat (high heat) in the housing part of the motor and / or its accessory parts and to avoid damage due to this heat. There are some results. However, the means for avoiding this thermal damage are still not sufficient, and improvements and inventions have been proposed. Therefore, prior art documents related to the present invention in this invention are shown below.

  Document (1) is a "bearing part cooling device for a vortex fan" disclosed in Japanese Patent Laid-Open No. 5-157091, and this invention is an improvement of a vortex fan in which the discharge air to be shut-off becomes high temperature, and the discharge air passes through it. An impeller casing, a motor bearing bracket attached to the flange of the casing, and a centrifugal fan are provided on a rotating shaft provided between the bearing bracket and the casing. It is intended to insulate and cool the casing and prevent heat transfer to the bearing portion of the drive motor so that it can be operated continuously.

  Further, the document (2) is “an air conditioner including a centrifugal blower and a centrifugal blower” disclosed in JP-A No. 2004-353510, and the centrifugal blower of the present invention includes a fan motor, a disk-shaped hub, a plurality of main blades, And a plurality of cooling blades. The hub has a cooling air hole in the vicinity of the fan motor, and the plurality of main blades are provided with a cooling blade at the outer peripheral edge of the hub. The blade for use has a higher static pressure performance than the main blade, and is intended to improve the air blowing efficiency without impairing the cooling function of the electric motor.

JP-A-5-157091 JP 2004-353510 A

  The document (1) intends to protect the bearing portion from high heat by providing a centrifugal fan for heat dissipation on the rotating shaft. However, it is considered that a sufficient heat dissipation effect cannot be expected with a configuration in which a simple centrifugal fan is provided. Moreover, in this invention, it is the structure which sucks in external air through an intake passage, and it cannot be considered that the amount of external air sucked is sufficient, and it is considered that a sufficient heat radiation effect cannot be expected as described above.

  Document (2) uses a hub to cool the centrifugal blower, and this hub achieves cooling air holes established in the vicinity of the fan motor, and cooling blades at the outer peripheral end portions thereof. However, it is considered that a sufficient heat radiation effect cannot be expected with the configuration using the cooling air holes and the cooling blade. In particular, the cooling effect on the bearing portion cannot be expected with this configuration.

  Therefore, in the present invention, [1] an interval is formed between the blower and the motor, and a cooling means is provided in the interval, and heat dissipation of the bearing of the blower, or a bearing of the motor of the blower, a motor case (casing) , Avoiding transmission of high heat to the output shaft, [2] improving the durability while protecting the motor of the blower from high heat, and [3] passing the cooling means to the interval Consists of one or several heat insulating rods, a rectifying plate provided so as to form a gap in the output shaft of the motor supported by the heat insulating rod, and a cooling fan provided on the output shaft. [4] Further, a rectifying plate is provided so as to form a gap in the output shaft of the motor supported by the heat insulating rod, and air flows through the gap of the rectifying plate, and is transmitted to the output shaft through the air flow. Diffuses high heat and avoids high heat damage Intended things like. [5] As indicated by an arrow “I”, it is intended to guide the outside air to a cooling fan or to prevent the flow of hot air generated by the blower to the motor.

The invention of claim 1 intends to achieve the above-mentioned objects [1] to [5].

Claim 1 is a blower in which a gap is formed between a motor for a blower and the blower, and cooling means is provided in the gap.
This cooling means
One or several heat insulation rods provided so as to pass the gap and surround the output shaft of the motor;
A support plate provided on the motor case for supporting one of the heat insulating rods;
A rectifying plate provided on the heat insulating rod and supported so as to form a gap in the output shaft;
A cooling fan provided on the output shaft and positioned between the current plate and the casing of the blower;
It is a blower provided with a cooling means composed of an extension extending from the rectifying plate in a direction opposite to the output shaft .

  The invention of claim 2 is intended to achieve the object of claim 1 and to provide a structure of a heat insulating rod of the cooling means optimal for achieving this object.

Claim 2 is the blower according to claim 1,
It is a blower provided with a cooling means configured to alternately provide a plurality of auxiliary heat radiating members of a heat radiating ring or a heat radiating plate on the heat insulating rod constituting the cooling means.

  The invention of claim 3 is intended to achieve the object of claim 1, to provide a structure of a heat insulating rod and / or a current plate that is optimal for achieving the object.

Claim 3 is the blower according to claim 1,
The blower is provided with a cooling means configured to provide a heat treatment surface treatment on the heat insulating rod and / or the rectifying plate constituting the cooling means.

  The invention of claim 4 is intended to achieve the object of claim 1, to provide a structure of a heat insulating bar and / or a current plate that is optimal for achieving the object.

Claim 4 is the blower according to claim 1,
This is a blower provided with a cooling means in which the surface treatment for heat dissipation provided on the heat insulating rod and / or the rectifying plate constituting the cooling means increases the surface area due to the uneven shape.

  The invention of claim 5 is intended to achieve the object of claim 1, to provide a structure of a heat insulating rod and / or a current plate that is optimal for achieving the object.

Claim 5 is the blower according to claim 1,
This is a blower provided with a cooling means in which the heat treatment surface treatment provided on the heat insulating rod and / or the rectifying plate constituting the cooling means is a heat-radiating paint.

The invention of claim 1 is a blower in which a gap is formed between the fan motor and the blower, and a cooling means is provided in the gap.
The cooling means is
One or several insulation rods provided so as to pass the gap and surround the output shaft of the motor;
A support plate provided on the motor case for supporting one of the heat insulating rods;
A rectifying plate provided on the heat insulating rod and supported so as to form a gap in the output shaft;
A cooling fan provided on the output shaft and positioned between the current plate and the casing of the blower;
The fan is provided with a cooling means composed of an extension extending from the current plate in the direction opposite to the output shaft .

  Accordingly, the present invention provides: [1] A space is formed between the blower and the motor, and a cooling means is provided in the space to dissipate heat from the bearing of the blower, or a bearing of the motor of the blower, a motor case (casing). In addition, it is possible to avoid transmission of high heat to the output shaft, [2] to improve the durability while protecting the motor of the blower from high heat, and [3] to pass the cooling means at intervals. Consists of one or several heat insulating rods, a rectifying plate provided so as to form a gap in the output shaft of the motor supported by the heat insulating rod, and a cooling fan provided on the output shaft. [4] Further, a rectifying plate is provided so as to form a gap in the output shaft of the motor supported by the heat insulating rod, and air flows through the gap of the rectifying plate, and is transmitted to the output shaft through the circulation of the air. Diffuses high heat, and high heat failure It can be avoided, as in [5] arrow "I", can induce ambient air into a cooling fan. Moreover, it has the characteristics that the flow of hot air generated by the blower to the motor can be prevented.

  The invention according to claim 2 is the blower according to claim 1, wherein the heat insulating rod constituting the cooling means is provided with a cooling means configured to alternately provide a plurality of auxiliary heat dissipation members of the heat dissipation ring or the heat dissipation plate. It is a blower.

  Accordingly, the second aspect has the characteristics that the object of the first aspect can be achieved, and the structure of the heat insulating rod of the cooling means optimal for achieving the object can be provided.

Invention of Claim 3 is an air blower of Claim 1, Comprising:
It is a blower provided with a cooling means configured to provide a heat treatment surface treatment for heat insulating rods and / or rectifying plates constituting the cooling means.

  Accordingly, the third aspect has the characteristics that the object of the first aspect can be achieved, and the structure of the heat insulating rod and / or the current plate of the cooling means optimal for achieving the object can be provided.

Invention of Claim 4 is an air blower of Claim 1, Comprising:
It is a blower provided with a cooling means in which the surface treatment for heat dissipation provided on the heat insulating rod and / or the rectifying plate constituting the cooling means increases the surface area due to the uneven shape.

  Accordingly, claim 4 has the characteristics that the object of claim 1 can be achieved, and that the structure of the heat insulating rod and / or the current plate of the cooling means optimal for achieving this object can be provided.

Invention of Claim 5 is a blower of Claim 1, Comprising:
It is the air blower provided with the cooling means in which the heat treatment surface treatment provided on the heat insulating rod and / or the rectifying plate constituting the cooling means is a heat radiation paint.

  Accordingly, the fifth aspect has the characteristics that the object of the first aspect can be achieved, and the structure of the heat insulating rod and / or the current plate of the cooling means optimal for achieving the object can be provided.

  An example of the present invention will be described.

  FIG. 1 is a schematic side view showing the first embodiment, FIG. 2 is a schematic side view showing the second embodiment, and FIG. 3 shows an experimental example of temperature distribution.

  In FIG. 1 showing the first embodiment, reference numeral 1 denotes a motor, and 2 denotes an output shaft of the motor 1. And the output side 1a of this motor 1 is extended to the air blower 4 mentioned later. And the space | interval 5 is formed between the output side 1a of this motor 1, and the anti-suction side 4a of the air blower 4, and the high heat | fever from this air blower 4 is a bearing (FIG. It is provided to reduce transmission to members such as (not shown) and / or to enable installation of the cooling means 7 described later, and to ensure a heat dissipation effect.

  The basic structure (each component) of the cooling means 7 is one or several heat insulating rods 70 (radiating rods) provided so as to pass the interval 5 and surround the output shaft 2 of the motor 1. ), A support plate 71 provided on the motor case 100 for supporting one of the heat insulating rods 70, and a current plate 10 provided on the heat insulating rod 70 and supported by the support plate 71 so as to form a gap 8 in the output shaft 2. And a cooling fan 12 provided on the output shaft 2 and positioned between the rectifying plate 10 and the casing 40 of the blower 4. In this example, the heat insulating rod 70 is provided between the support plate 71 and the auxiliary support plate 72 provided so as to face the support plate 71 when being provided at the interval 5. The auxiliary support plate 72 is attached to the casing 40 of the blower 4. Thereby, high heat generated inside and outside the blower 4 is transmitted. For example, transmission to the output shaft 2 of the motor 1, the motor case 100, and / or the negative pressure side bearing 14 (the entire motor 1) inside the motor 1 is reduced. By forming the gap 8 described above, the cooling and / or heat dissipation effect through the blower 4 by the cooling fan 12, the blowing of outside air (wind) to the respective constituent elements, the passage of the outside air through the gap 8, and the like. Can be achieved. Then, cool outside air (airflow) indicated by an arrow “I” is introduced, and then discharged as indicated by an arrow “B”, thereby achieving efficient cooling and / or heat dissipation.

  In addition, by providing the extension part 10a in the rectifying plate 10, the outside air can be guided to the cooling fan 12 as indicated by an arrow "A". Moreover, the flow to the motor 1 of the hot air which the air blower 4 generate | occur | produces can be prevented.

  Further, other examples of the cooling means 7 will be described. A configuration in which the heat-dissipating rings 70a and / or the heat-insulating rings 70b are fitted alternately and / or independently on the heat-insulating rod 70 (example of FIG. 1), and heat dissipation. A configuration for attaching the plate 70c (example in FIG. 2), and an example (not shown) in which each component of the cooling means 7 is provided with a heat dissipation coating and / or a thermal insulation coating of about 30 μm are provided, although not shown. Is also possible.

  In the drawing, the impeller 41 of the blower 4 is provided via an anti-negative pressure side bearing 15 provided on the output shaft 2, and rotates simultaneously with the output shaft 2. Moreover, the casing 40 of this air blower 4 is provided with the suction inlet 42 connected to ventilation means, such as a duct which is not shown in figure, and the discharge outlet 43 to which this kind of ventilation means is connected if necessary. Therefore, after hot air is sucked into the casing 40 via the suction port 42 from this blowing means, it is blown or exhausted from the discharge port 43 via the impeller 41. In such a state, the output shaft 2 is exposed to a high heat region (high temperature region) and becomes high heat. However, since the output shaft 2 is provided with the cooling means 7, it is gradually cooled. FIG. 3 shows this state, and hot air is sucked into the blower 4 when the room temperature of the test chamber is about 15 ° (hereinafter, only the temperature is shown). This hot air keeps approximately 480 °. In this high temperature region, it was confirmed that the temperature of the negative pressure side bearing 14 was lowered to about 40 ° and the temperature of the anti-negative pressure side bearing 15 was lowered to about 40 °. If the temperature is about this level, the negative pressure side bearing 14 and / or the anti-negative pressure side bearing 15 is not considered to be damaged or deteriorated in function, and a sufficient cooling effect can be expected.

  The stoppers 30 such as bolts and nuts are made of stainless steel and cut heat transmission. Further, in the configuration in which the heat dissipation ring 70a and / or the heat insulation ring 70b described above are alternately and / or independently fitted, the characteristics of the heat dissipation ring 70a and / or the heat insulation ring 70b and the heat dissipation plate 70c are sufficiently exhibited, and efficient. Dissipate heat or cool. The arrangement of the heat dissipation ring 70a and / or the heat insulation ring 70b and the heat dissipation plate 70c is free. However, in order to achieve more efficient heat dissipation or cooling, for example, the arrangement of the heat dissipation ring 70a and the heat insulation ring 70b The arrangement of the heat sinks 70c is desirable. The reason is that after the high heat is temporarily radiated by the heat radiating ring 70a or the heat radiating plate 70c, the remaining heat is guided to the next heat radiating ring 70a or the heat radiating plate 70c via the heat insulating ring 70b. There is a feature that heat can be reliably and efficiently radiated and cooled by radiating heat with the ring 70a or the heat radiating plate 70c. The arrangement of the heat dissipation ring 70a and the heat insulation ring 70b and the arrangement of the heat dissipation plate 70c can be reversed, and the heat dissipation and cooling can be appropriately performed. Therefore, in any case, there is a feature that heat and heat can be radiated and cooled reliably and efficiently by using the arrangement of each aspect. A part of the heat radiating plate 70c may be a heat insulating plate. Furthermore, it is also possible to secure a surface area by providing holes and irregularities in the heat dissipation ring 70a and / or the heat dissipation plate 70c, thereby achieving more effective heat dissipation and cooling.

FIG. 1 is a schematic side view showing the first embodiment. FIG. 2 is a schematic side view showing the second embodiment. Fig. 3 shows an example of temperature distribution experiment.

DESCRIPTION OF SYMBOLS 1 Motor 1a Output side 100 Motor case 2 Output shaft 4 Blower 4a Anti-suction side 40 Casing 41 Impeller 42 Suction port 43 Discharge port 5 Space | interval 7 Cooling means 70 Heat insulation rod 70a Heat radiation ring 70b Heat insulation ring 70c Heat radiation plate 71 Support plate 72 Auxiliary Support plate 8 Gap 10 Current plate 10a Extension 12 Fan 14 Negative pressure side bearing 15 Anti negative pressure side bearing 30 Stopper

Claims (5)

An air blower in which a gap is formed between the fan motor and the blower, and cooling means is provided in the gap.
This cooling means
One or several heat insulation rods provided so as to pass the gap and surround the output shaft of the motor;
A support plate provided on the motor case for supporting one of the heat insulating rods;
A rectifying plate provided on the heat insulating rod and supported so as to form a gap in the output shaft;
A cooling fan provided on the output shaft and positioned between the current plate and the casing of the blower;
A blower provided with a cooling means configured by an extension portion extending in a direction opposite to the output shaft from the rectifying plate. The blower according to claim 1,
A blower provided with a cooling means configured to alternately provide a plurality of auxiliary heat radiating members of a heat radiating ring or a heat radiating plate on the heat insulating rod constituting the cooling means. The blower according to claim 1,
A blower provided with a cooling means configured to provide a heat treatment surface treatment on the heat insulating rod and / or the current plate constituting the cooling means. The blower according to claim 1,
A blower provided with cooling means in which the heat treatment surface treatment provided on the heat insulating rod and / or the current plate constituting the cooling means increases the surface area due to the uneven shape. The blower according to claim 1,
A blower provided with a cooling means in which a heat dissipating surface treatment provided on the heat insulating rod and / or the current plate constituting the cooling means is used as a heat dissipating paint.

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